FR2379130A1 - Perfectionnement aux procedes d'enregistrement magnetique inalterable - Google Patents

Perfectionnement aux procedes d'enregistrement magnetique inalterable

Info

Publication number
FR2379130A1
FR2379130A1 FR7702145A FR7702145A FR2379130A1 FR 2379130 A1 FR2379130 A1 FR 2379130A1 FR 7702145 A FR7702145 A FR 7702145A FR 7702145 A FR7702145 A FR 7702145A FR 2379130 A1 FR2379130 A1 FR 2379130A1
Authority
FR
France
Prior art keywords
cards
indelible
magnetic
polymerisation
actinic radiation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7702145A
Other languages
English (en)
French (fr)
Other versions
FR2379130B1 (enrdf_load_stackoverflow
Inventor
Pierre Eymard
Andre Michaud
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Compagnie pour le Developpment des Transactions Automatiques TRANSAC
Original Assignee
Compagnie pour le Developpment des Transactions Automatiques TRANSAC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Compagnie pour le Developpment des Transactions Automatiques TRANSAC filed Critical Compagnie pour le Developpment des Transactions Automatiques TRANSAC
Priority to FR7702145A priority Critical patent/FR2379130A1/fr
Publication of FR2379130A1 publication Critical patent/FR2379130A1/fr
Application granted granted Critical
Publication of FR2379130B1 publication Critical patent/FR2379130B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/06187—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with magnetically detectable marking
    • G06K19/06196—Constructional details
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/02—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the selection of materials, e.g. to avoid wear during transport through the machine
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/842—Coating a support with a liquid magnetic dispersion

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Credit Cards Or The Like (AREA)
FR7702145A 1977-01-26 1977-01-26 Perfectionnement aux procedes d'enregistrement magnetique inalterable Granted FR2379130A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7702145A FR2379130A1 (fr) 1977-01-26 1977-01-26 Perfectionnement aux procedes d'enregistrement magnetique inalterable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7702145A FR2379130A1 (fr) 1977-01-26 1977-01-26 Perfectionnement aux procedes d'enregistrement magnetique inalterable

Publications (2)

Publication Number Publication Date
FR2379130A1 true FR2379130A1 (fr) 1978-08-25
FR2379130B1 FR2379130B1 (enrdf_load_stackoverflow) 1980-02-15

Family

ID=9185917

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7702145A Granted FR2379130A1 (fr) 1977-01-26 1977-01-26 Perfectionnement aux procedes d'enregistrement magnetique inalterable

Country Status (1)

Country Link
FR (1) FR2379130A1 (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
FR2379130B1 (enrdf_load_stackoverflow) 1980-02-15

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